Furnace



F; H. WOLKENHAUER.

FURNACE.

APPLICATION FILED SEPT. 24, 191?. I 1,410,049. Patented Mar. 21,1922.

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F. H. WOLKENH-AUER.

- APPLICATION mlighszP'i-u, 1917 Patented Mar. 21, 1922. k :1 I a SHEETS-SHEET '3.

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FREDERICK H. WOLKENHAUER, OF BENSENVILLE, ILLINOIS.

FURNACE.

Specification of Letters Patent.

Patented Mar."21, 1922.

Application filed September 24, 1917. Serial No. 192,901.

To all whom 25 may concern. I

Be it known that I, FREDERICK H. VOLK- ENHAUER, a citizen of the United States, and a resident of the city of Bensenville, county of Du Page, and State of Illinois, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

My invention'relates to improvements in furnaces and has for its object the provision of an improved construction of this character adapted to induce thorough combustion of fuel and thus prevent smoke and also galapted for the economical consumption of el. The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

Fig.1 is a longitudinal section through the forward portion of a boiler furnace, embodying the invention,

Fig. 2, a front view of the same shown partially in section,

Fig. 3, a longitudinal section through the lower forward portion of the furnace lookiPng in the opposite direction from that of l ig. 4, .an enlarged detail view of the forward portion of the grate employed inthe furnace, and

Fig. 5, a partial top plan view of one forward corner of said grate.

The preferred form of construction as illustrated in the drawings comprises a suitable boiler furnace provided with a suitable fire chamber 6, a return-flue boiler 7 andv a draft flue 8, as indicated. A. grate frame 9. is arranged in the fire chamber 6 and is mounted on bell cranks 10 on posts 11 therein. The bell cranks 10 are connected by links 12 with operating handles 13 situated at the front of the furnace, all except the grate surfaces substantially as disclosed in my prior Patent, No.

1,160,233, granted November 16. 1915. .The' grate frame 9 is equipped with two shiftable frames, one of said shiftable frames consisting of side bars 1-: and'cross rods 15 and the other consisting of side bars 16 and cross rods 17, said frames being connected by slot and pin connections 17 whereby they may be shifted relatively to each other or to the grate frame An operating handle 18 1S connected with the framev 11-15 and a similar handle 19 is connected with the frame 16--1T for'manip- 'ing the handles 18 and 19."and then simultaneously shifted rearwardly to effect rearward feed ng of the fuel on the grate and also agitation of said fuel to discharge the ashes therefrom.

An apron 24'is hinged to the forward wall of the fire chamber 6 and rests looselyon the forward rod 15, thus permitting of vertical adjustments of the grate, but compelling passage of the drafttherethrough. A similar apron 25 is hinged to the forward grate bar 20 and rests loosely upon the apron 24 for the same purpose.

A bridge wall top 26,is rigidly mounted on the rear end of the grate-frame 9 .and an apron 7 is mounted upon a rocker shaft 28 to seal the gap between the rearmost grate bar and said bridge wall top. The apron 27 is operated by means of a rocker arm 29 and an operating handle 30'as indicated to permit passage of draft when desired and also to discharge accumulations of ashes. Ahollow fire arch 31 extends across top of fire chamber 6, above the grate frame 9 and is equipped 'with a plurality ofdischarge openings or slits 32 arranged transversely in the lower side thereof. as shown. The interior of arch 31 is connected by means of a pipe 33 provided with a valve 34 with the discharge of a blower casing 35 mounted as shown, and operable by means of a pulley 36. The blower casing is provided with an intake communicating with the atmosphere controlled by a valve 37 operated by an arm 38 and "also with an intake39 equipped with a similar valve leading into the draft flue 8 whereby either air from the atmosphere, or smoke from the fiue 8, or a mixture of the two may be discharged into fire arch 31 and thence into fire chamber 6, immediately onto the fuel therein, thus promoting com-, bustionand thorough consumption of the smoke.-

grate bars 20, overlapfore,

An apron 42 formed in hinged collapsible sections is swingin'gly connected to depend from the forward portion of grate frame 9 substantially even with the forward portion of the fire arch 31 and isequipped with anioperating handle 43 for manipulating or adjusting the same.

Another discharge pipe 44- equipped with a valve 45, leads from the blower casing 35 into and through a fiue 46 which, in turn, leads. from the upper forward portion of fire chamber 6 into the lower rearward portion thereof, .below the fire grate and to the rear of the apron 4:2. The 'pipea l is equipped with a discharge nozzle a? discharging through the lower openingof fiue 46 an'dby means of which a draft may be induced through said fine to withdraw a.

portion of the smoke and gases evolved from the coal on the forward portion of the grate and introduce them into the fire chamber below the grate and behind the apron, so that the same will have to pass upwardly through the rearward portion of the grate.

By this arrangement the fuel on the forward p'ortionof the grate will be first transformed into coke and the gases evolved thereform thoroughly consumed in the fun nace. Then this coke is gradually fed along the grate under the fire arch where it is completely consumed by the combined actions of the drafts thereon; Any gases or smoke passing off through the flue may be withdrawn therefrom and introduced into the fire chamber through the fire arch 31 for' further combustion.

WVhile I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. 1, theredo not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patentis: i

1. A furnace comprising a tire chamber provided with avertically adjustable grate and means for inducing a draft there through; a hollow fire arch extending across the top of said fire chamber above said grate, said fire arch being provided with one or more discharge openings in its lower side; means for withdrawing smoke from said draft beyond said furnace and discharging said smoke Jhrough said arch; and means d scribed,

6. A furnace comprising a fire chamber 125 for drawing air from the atmosphere and introducing it into described. I

2. A furnace comprising a fire chamber provided with a grate; ducing a draft therethrough; and a flexible collapsible apron depending from the forward port-ion of said grate, substantially as described.

A furnace provided with a grate and means for inducing a draft therethrough; a hollow fire arch extending across the top of said fire chamber above said grate, said fire arch being provided-with one or more openings lower side; a blower casing having intakes leading ,to said draft and to the atmosphere; valves in said intakes, a valved discharge pipe from said blower casing leading into said arch, substantially as said fire arch; and a valved branch from said 35 discharge pipe leading into said draft, substantially as described.

4. ,A furnace comprising provided with a grate and means for inducing a draft therethrough; a hollow fire arch 9 extending across the top ofsaid fire chamber above said grate, said fire arch being provided with one or more openings in its lower side; a blower Casing having intakes leading to-said valves in sail intakes; a valved discharge pipe from said blower casin'g leading into said fire arch; a valved branch from said a discharge pipe leading into said draft; and

a discharge pipe leading from said blower casing and discharging under said grate, substantially as described.

5. A furnace comprising a fire chamber provided with. a vertically adjustable and tiltable grate and draft therethrough; a hollow fire arch ex tending across the top of said fire chamberabove' said grate, said fire arch being provided with one orniore discharge openings in its lower side; ,a blower casing having intakes leading to said draft and the atmosphere; valves in said intakes; a valved discharge pipefrom said blower casing leading into said fire arch; a valved branch from said discharge pipe leading into said draft;

a depending apron on said grate; a fine leading from thenpper portion ofthe fire chamber forward of said apron into the lower portion of said the chamber under said grate and to the rear of said apron; and a disi209 charge pipe leading from said blower casing through said flue and-discharglng therethrough under said grate, substantrally as provided with a vertically adjustable and tiltable grate and means for inducing a draft therethrough; a hollow fire arch extending across the top of said fire chamber above said grate, said fire arch being proand means for in- 70 comprising a fire chamber 75 in its 30 a fire chamber draft and to the atmosphere; as

means for inducing a 105' vided with one or more discharge openings in its lower side; blower casing having intakes leading to said draft and the atmosphere; valves in said intakes; a valved discharge pipe from said blower casing leading into said fire etch; a valved branch from said discharge pipe leading into said. draft;

a depending apron on said grate; a time leading from the upper portion of the fire chamber forward of said apron into the lower portion of said fire chamber under said grate and to the rear of said apron; a discharge pipe leading from said blower casing through said flue and discharging therethi'ough under said grate; and lneansensaid grate for feeding fuel thereon past said arch, substantially as described.

1 provided with a grate and means for inducing a draft therethrough; a hollow fire arch A furnace comprising a fire chaiinber ext-ending aeross the top of said fire chami grate; a flue leading from the upper portion of said the chamber forward of said grate to the lower portion of said fire chamber rearward of said grate; and means for inducing a draft through said flue, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnessss- FREDERECK ti. WBLKENHAUER.

witnesses:

JOSHUA R. H. Poms, B. G. RICHARDS. 

